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shapes colouring regular shapes products dominos planes lines star numbers cube numbers functions sequences combinatorics indices balancing shape clocks polynomials speed multiplication remainders rugby determinants square numbers calculus digital clocks cryptic clues prime numbers partitions pascal's triangle cubics taxicab geometry money ellipses ave even numbers 3d shapes parabolas dodecagons pentagons dates trigonometry chess scales median number differentiation irreducible numbers circles probabilty sport integers chalkdust crossnumber algebra geometry grids factors polygons advent crossnumber integration quadrilaterals sums tournaments matrices crosswords axes hexagons decahedra digital products perimeter addition averages squares perfect numbers menace area factorials palindromes triangle numbers range surds crossnumbers gerrymandering unit fractions division triangles christmas tiling consecutive integers logic people maths probability arrows consecutive numbers multiples sets binary geometric means coordinates the only crossnumber square roots sum to infinity fractions proportion volume doubling folding tube maps floors expansions elections chocolate means angles tangents mean digits 2d shapes coins complex numbers albgebra cards percentages rectangles books odd numbers games numbers geometric mean dice routes time wordplay bases spheres graphs symmetry quadratics cryptic crossnumbers